Eveready B112 Hearing Aid "B" Battery This is an English Eveready 45 volt hearing aid "B" battery used in vacuum tube hearing aids in the 1930s and 1940s. This battery weighed 8 oz., and measured 4" by 2˝" by 7/8". It was sometimes paired with the D888 "A" battery. |  | Click picture for larger view | | | | | |
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